Avista needs more detail on Colstrip, carbon costs in its energy plan, regulators say
The
The UTC directed Avista and two other owners --
"It is imperative that utility planners recognize the risks and uncertainties associated with greenhouse gas emissions and identify a reasonable, cost-effective approach to addressing them," the three-member commission wrote in its decision.
Burning coal adds more carbon dioxide to the atmosphere than other fossil fuels. For years, the
"We need a date certain for retirement," Howell wrote in an email, saying the plant's continued operation exposes ratepayers to financial risk.
Avista bought a 15 percent stake in
Avista recently agreed to a new depreciation schedule for units 3 and 4. It assumes the remaining useful life of the units is through the end of 2027, shaving 10 years off the previous schedule.
Although Avista agreed to accelerate
The depreciation schedule was part of a proposed settlement with the UTC outlining how Avista will operate after it's
Avista and other utilities are required to update their 20-year resource plans every two years, indicating how they will meet future electric load growth. Avista's current plan already addresses some issues related to carbon costs, Fielder said.
Work will begin this summer on the next plan, which will provide additional information requested by the UTC, she said.
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